General

Symptom

Suspect area

Meter display does not properly function.

1. Combination meter ECU

Entirely black screen appears.

1. Fuse

2. Wire harness and connector

3. Combination meter ECU

Turning the light control switch ON does not dim the light.

1. Illumination switch

2. Wire harness and connector

3. Combination meter ECU

Brightness cannot be changed by the illumination switch operation.

1. Illumination switch

2. Wire harness and connector

3. Combination meter ECU

Speedometer:

Symptom

Suspect area

Improper display (Remained as 0 km/h)

1. Accessory that utilizes vehicle speed signals

2. Brake ECU

3. Combination meter ECU

4. Wire harness and connector

Speedometer only does not light up.

1. Combination meter ECU

Abnormal display (Incomplete numbers displayed)

1. Combination meter ECU

Displayed value changes frequently or sharply.

1. Accessory that utilizes vehicle speed signals

2. Brake ECU

3. Combination meter ECU

4. Wire harness and connector

Margin of error in speedometer is large.

1. Accessory that utilizes vehicle speed signals

2. Brake ECU

3. Combination meter ECU

4. Wire harness and connector

ODO/TRIP Meter:

Symptom

Suspect area

ODO/TRIP only does not light up.

1. Combination meter ECU

Abnormal display (Incomplete number displayed)

1. Combination meter ECU

Both meters do not integrate values. (When speedometer is normal)

1. Combination meter ECU

Trip meter only does not integrate values.

1. ODO/TRIP switch

2. Combination meter ECU

2003 PRIUS (RM957U)

Trip meter cannot be reset.

1. ODO/TRIP switch

2. Combination meter ECU

Display cannot be shifted among ODO, TRIPA and TRIPB.

1. ODO/TRIP switch

2. Combination meter ECU

Without resetting, the display returns to 0.0 km.

1. ODO/TRIP switch

2. +B wire harness

3. Combination meter ECU

Error of accumulated distance is large.

1. Accessory that utilizes vehicle speed signals.

2. GND wire harness

3. Brake ECU

4. Wire harness and connector

5. Combination meter ECU

Others:

Symptom

Suspect area

Some indicators or warning lights are always ON.

1. Meter circuit plate

2. Corresponding switch and ECU

3. Combination meter ECU

4. Multiplex communication circuit

Some indicators or warning lights do not light up.

1. Bulb

2. Meter circuit plate

3. Corresponding switch and ECU

4. Combination meter ECU

5. Multiplex communication circuit

Buzzer does not stop.

1. Combination meter ECU

2. Corresponding switch and ECU

DI-ese

4. Fuel receiver gauge is inoperative or improper

INSPECTION PROCEDURE

1

Fuel gauge diagnosis check. (See page DI-681)

2

Reset inclination sensor. (See page BE-47)

3

Fuel sender gauge check. (See page BE-42)

NG^ Replace fuel tank.

OK

4

Multiplex communication circuit check. (See page DI-762)

CHECK:

Check if the communication between the combination meter and the multiplex communication circuit is normal or not.

Multiplex communication circuit error. Wire harness faulty.

Ignition switch ON

CHECK:

With the fuel sender gauge connector connected, check if the voltage between each of terminal 1 (FV), 5 (FR) and 6 (FE) of the vehicle side wire harness and connector and the body ground is normal or not.

Condition

Ignition switch ON

Ignition switch ON

Constant

Terminal

Specified value

Continuity is always identified.

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Responses

  • aladino
    How to replace odo trip switch 2002 prius?
    9 years ago

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